At least five persons died and 11 people were injured in a fire accident at the Cochin Shipyard in Kerala this morning. According to sources in the shipyard, a blast was heard from a docked vessel, Sagar Bhushan, around 10 am, when around 20 people were working in the ship. The blast took place in the tank of the ship, which is owned by the Oil and Natural Gas Corporation. The drilling vessel was being repaired at the dry dock of the shipyard.